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Dieselr aluminized downpipe back exhaust—4" heavy-duty system built for stronger flow, precise fitment, and corrosion-resistant performance.
Dieselr aluminized 4" Cat & DPF race pipes—built for smoother flow, cleaner routing, and long-term durability under heavy-duty use.
Downpipe Back Exhaust - Single grouped by options for Duramax fitment.
Custom fitment brief
Outline your vehicle, performance targets, and timeline. The build desk will confirm availability, pricing, and next steps in writing.
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